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/*
* Copyright (C) 2014 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <dlfcn.h>
#include <fcntl.h>
#include "virmock.h"
#define USB_SYSFS "/sys/bus/usb"
#define FAKE_USB_SYSFS "virusbtestdata/sys_bus_usb"
static int (*real_open)(const char *pathname, int flags, ...);
#if WITH___OPEN_2
static int (*real___open_2)(const char *path, int flags);
#endif
static DIR *(*real_opendir)(const char *name);
static void init_syms(void)
{
if (real_open)
return;
#if defined(__GLIBC__) && defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS == 64
VIR_MOCK_REAL_INIT_ALIASED(open, "open64");
#else
VIR_MOCK_REAL_INIT(open);
#endif
#if WITH___OPEN_2
VIR_MOCK_REAL_INIT(__open_2);
#endif
VIR_MOCK_REAL_INIT(opendir);
}
static char *get_fake_path(const char *real_path)
{
const char *p = NULL;
char *path = NULL;
if ((p = STRSKIP(real_path, USB_SYSFS)))
path = g_strdup_printf("%s/%s/%s", abs_srcdir, FAKE_USB_SYSFS, p);
else if (!p)
path = g_strdup(real_path);
return path;
}
DIR *opendir(const char *name)
{
g_autofree char *path = NULL;
init_syms();
path = get_fake_path(name);
return real_opendir(path);
}
int open(const char *pathname, int flags, ...)
{
g_autofree char *path = NULL;
int ret;
va_list ap;
mode_t mode = 0;
init_syms();
path = get_fake_path(pathname);
if (!path)
return -1;
/* The mode argument is mandatory when O_CREAT is set in flags,
* otherwise the argument is ignored.
*/
if (flags & O_CREAT) {
va_start(ap, flags);
mode = (mode_t) va_arg(ap, int);
va_end(ap);
}
ret = real_open(path, flags, mode);
return ret;
}
#if WITH___OPEN_2
int
__open_2(const char *pathname, int flags)
{
g_autofree char *path = NULL;
init_syms();
path = get_fake_path(pathname);
if (!path)
return -1;
return real_open(path, flags);
}
#endif
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